I have a small home (about 700 sq ft) that needs to be thoroughly cleaned about once a month. My husband and I both have careers that keep us busy, and that keep us away from home frequently. We keep up with the day-to-day clutter, however, things that need to be completed monthly like windowsills, baseboards, walls, dust, etc we tend to neglect. We do have a LOT of pets so this is not a home for someone with allergies. (3 cats, 2 dogs, and a rabbit - all rescues). The dogs are outside during the day so the housekeeper will not need to worry about interacting with them.
Ultimately, if this works out for us, we also have an outdoor shed that we have turned into a small hang out that we will also want to be cleaned in the spring/summer months that we'd be willing to pay extra for.